Chapter 5 WAN Setup 31
The Device tunnels IPv4 packets inside IPv6 encapsulation packets to the ISP’s Address Family
T
ransition Router (AFTR in the graphic) to connect to the IPv4 Internet. The local network can also
use IPv6 services. The Device uses it’s configured IPv6 WAN IP to route IPv6 traffic to the IPv6
Internet.
Figure 18
ISP (IPv6)
IPv6 Internet
IPv6
AFTR
IPv4 in IPv6
IPv4 Internet
IPv6
IPv4
+
LAN
- IPv6
- IPv4
WAN
- IPv6
- IPv4 in IPv6
Dual Stack Lite
3G
3G (Third Generation) is a digital, packet-switc
hed wireless technology. Bandwidth usage is
optimized as multiple users share the same channel and bandwidth is only allocated to users when
they send data. It allows fast transfer of voice and non-voice data and provides broadband Internet
access to mobile devices.
Finding Out More
See Section 5.5 on page 47 for technical background information on WAN.
5.1.3 Before You Begin
You need to know your Internet access settings such as encapsulation and WAN IP address. Get this
information from your ISP.
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General